Home / 13,190.10-18,202.56-7,221.67

Finding the Fourth Proportional to 13,190.10, 18,202.56 and 7,221.67

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Solution

The fourth proportional to 13,190.10, 18,202.56 and 7,221.67 is: 9,966.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.10 : 18,202.56 = 7,221.67 : x
  2. Step 2: Convert to fraction form
    13,190.10/18,202.56 = 7,221.67/x
  3. Step 3: Cross multiply
    13,190.10x = 18,202.56 × 7,221.67
  4. Step 4: Simplify right side
    13,190.10x = 131,452,845.37
  5. Step 5: Solve for x
    x = 131,452,845.37/13,190.10
  6. Step 6: Final answer
    x = 9,966.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.